Water-tube boiler.



P. KESTNER.

WATER TUBE BOILER.

uruouxox mm 812M223, 1009.

1,064,973, Patented June 17, 1913.

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ngg h lawmqw W/M'W W P. KESTNER. 7 WATER TUBE BOILER. APPLICATION FILED P123, 1909. 1 ,064,973. Patented June 17, 1913.

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000 ooo- 000 000 ooo 000 000 000 000 000 000 0 0 000 one 000 000 000 ooo 000 000 coo 000 ooo )000 000 000 P. KESTNER. WATER TUBE BOILER. APPLIOATIOII FILED SEPT. 23, 1909.

Patented June 17, 1913.

P. KESTNBR. WATER TUBE BOILER. APPLICATION 'EILIZD SEPT. 23, 1909.

1,064,973. Patented June 17,1913.

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of them but I. pref r l PAUI: KESTNER, OF LILLE, FRANCE.

WATER-TUBE BOILEE Specification of Letters Patent.

Patented June 1'7, 1913.

Application filed September 23. 1908. Serial No. 519,146.

To all whom it may concern Be it known that I, PAUL KEsrNER, a citi zen of the French Republic, residinglat Lille, Nerd, France, have invented a new and useful Improvement in ater-Tube Boilers, of which the following is. a specification.

This invention has reference to improve-- ments in water-tube boilers, and its object is to obviate certain defects inherent in such vboilers as heretofore usually constructed.

It: is well known that in water-tube boilers wherein. a large number of tubes are arranged cluster-wlse'across or between which the furnace gases pass, the first two rowsmore ,or:lessof said cluster of tubes, e'. 6. those rows against which the hot furnace gases first impinge act as a quasi screen to the other tubes and absorb an inordinate proportionvo'f the heat units given oil by the said gases with the resultthat the conscquent very rapid production of steam in said two rows and comparatively slow production of steam in the rest of the tubes causes violent reaction and a serious interference with the proper and equeble circulation of the water in the whole system. Further, the excessive heating of some of the tubes as compared with the rest causes unequal expansion of the parts producing considerable strains and stresses Within the complete structure detrimental thereto and causing leakage.

It has been proposed to construct u boiler with :1 front row of vertical water tubes ranged in zig-zag or serpentine form, with the object of exposing as many tubes as possible to the ,first contact of the products of combustion, and with a rear row of tubes similarly arranged with the spaces between the elbows formed by the scrpcntii'iehrrangcn'ient of the tubes opposite the spires between the elbows of the front row. and; further, in such it boiler to arrange bulilc plutes to project into the aforesaid spews but such an arrangement of the tubes is still practically a cluster-wise arrangement.

My invention consists in o Watentube boiler wherein the tubes are arranged in a single or double row of tubes in. a manner spaced comparatively far apart it may be- .u double row double row. in. suitable distances apart 1 provide halite possible to have more on their Wuyto the uptake.

plates which are also of approximately W form and which project alternately at one side and the other into the spaces formed by the double or other) rows of tubes and whereby the hot are compelled to traverse and retru verse past the rows of tubes be arranged to be vertical or at an angle thereto. When arranged vertically I .may connect the top ends to u header or collector which is in communication with a cylindrical or other suitably shaped vessel and the bottom ends may be connected to a cylindrical or other vessel. The hot furnace gases are preferably made to impinge against the tubes :1 short distance above the bottom vessel causing a free and rapid movement upward of the Water and steam. The return of the Water" from the top vessel may be provided for either by 2. single pipe of comparzztively large diameter or 1 may provide for the return by a series of pipes leading directly from the upper cylindrical vessel the ascending water toward the surface of the water contained within the former 'butllc. in this case the descending tubes :u'e'fixed in the latter bull'le and the ascencb ing tubes to the shell and to enable any of the dmcending tubes to be readily replaced I may provide the top of the upper vessel with u series of capped openings. I may also provide a superheater and feed water heater both preferably of tubulur construction. The bathe plates whereby the ill rectionef travel of the hot furnace gases is determined may be pivotully carried and adapted. to be rocked as required so as not only toshuhc oil any soot and dust that has collected thereon but also, by the vibration set up by such rocking, to shake off soot and dust that may be adhering to the water tubes.

Various forms and modifications of my invention are shown in the accompanying drawings, in which:

l igure i is a sectional elevation of one form of water tube boiler embodying my The tubes in ay invention; Fig. 2, is a plan view of the same,

partly in section; Fig. 3, is a sectional plan view, on an cnlar cd scale, ofa portion of the structure l10\\'li inFig. 1; Fig. 4, is an end view of one of the battle plates employed with my improved boiler; Figs. 5 and ii, are diagrammatic views illustrating possible arrangements of the circulating tubes; Fig. 7, is a sectional elevation otanother form of water tube boiler embodying my invention; Figs. 8 and 9, are sectional views of other forms of water tube boilers embodying my invention; Fig. 10, illustrates a further modification embodying my invention, and Fig. 11, is a diagrammatic view illustrating another possible arrangement of the circulating tubes.

\Vhile I have shown certain forms of water tube boilers embodying my invention. I do not wish to be limited to any special type of boiler. e

Referring to the views illustrated on the several sheets of drawing, Figs. 1 and 2, show in sectional side elevation and plan view respectively a watentube boiler in which vertical tubes a are arranged in a double row in a manner as will be seen from Fig. 2-to form approximately the letter W. Fig. 3 is an enlarged view of part of Fig. 2 but showing the battles g which are also formed approximately like the letter W so that they may be made to enter the spaces m and n. A number of battles are arranged in the flue at the desired distances apart they being made to project alternately from one side and the other as will be seen from Fig. l'thus compelling the hot gases to traverse and retraverse the vertical tubes. The upper ends of the tubes communicate with a. header cwhich in turn communicates with a cylindrical vessel d and the lower ends of the tubes are connected to a collector L a return pipe 1' also connecting the cylinder (2 with said collector. The length of the tubes is such thatthe hot gases lrom the furnace. 1' will impinge against the tube some little distance above the collector Z). The batlles g are. preferably connected by rods 1) to an operating or vibrating handle u so that said bullies may be rocked or vibrated in order to remove soot that may be collected thereon and by causing themto strike against the tubes also shaking otl' soul that may be adhering to them.

Fig. 4 shows an end view ot one of the bullies.

The tubes are not necessarily arranged in a double row, 6. g. in l ig. 5 they are slim-ii arranged in a single row and in Fig. (i in a trcblc row but l do not. restrict ni .-:.clt' to ,-"'an v particular number of row a l P vided that they are arranged in the manner substantially as (lt?$(1ll)0(l and that tree access of the hot gases to all said rows may be had.

pipe 6 and cause the return flow of water from r] to b to take place in the known manner. 1

If desired my improved boiler may com prise two or more systems of tubes arranged as described. As an example Fig. 8 shows a boiler having two such systems the arrangement being such that the hot gases. traverse first up one fine in which one system of tubes is located and then down an other fine in which the other system of tubes is located each system of tubes being connected to independent vessels dand 6 re-' spectively. A very similar arrangement is shown in Fig. 9 the diitere'nce being that the two systems of tubes are closer together and both systems connected at their upper ends to a common vessel d.

I It is not essential that when the vertical tubes are connected at their upper endsdi self to such an arrangement.

7 In the boiler construction herein shown it will be seen that the tubes are arranged as an entirety in a sinuous group, as it may be termed, in a single line or in a plurality of lines, presenting at each side of the group a series of like reentrant angular spaces the sides of which may be parallel or which may diverge outwardly, the spaces of the one series alternating witlrand being positioned rcvc-rscly to the spaces of the other series. The depth of such a space is determined by the angularity of the ranks of. tubes in the group, by the size, number and spacing of the tubes in a rank, and of course by the distance t'rom one to the other side of the group of tubes as a whole. The free edges of tl c batlle plates are shaped to conform to thc sinuous contour of the grcu of tubes, that is. aid plates have serrate or toothed edges. the teeth or convex portions lilting into the ri-iiutraut spaces presented y the group of tubes, and the convex poriioiis of one plate are ocated opposite the concave portions of the next plate. Thus each batllo plate extends from one side of the group of tubes nearly to the other side thereof, and thereby the products of combustion are compelled totake such acourse that a very uniform heatin action upon all the tubes of the group is e acted".

rihat I cl'aim'as my invention and desire to secure by Letters Patient is 1*. A water tube boiler having its tubes arranged to form in cross section approximately the leiter W, and battles projecting alternately from opposite sides of the tubes and fitting into the s aces formed by said tube arrangement, ba e portions fitting into the spaces on one side of the tubes alternating with and; extending at their apices beyond the apices of similar battle portions fitting into the spaces on the other side of the tubes.

2. A water tube boiler having its tubes arranged to form in cross section approximately the letter W, and movable bafiies pro jceting alternately from opposite sides of and hitting into the spaces formed by said arrangement of tubes, bafile portions fitting into the spaces on one side of the tubes alternating with and extending at their apices beyond the apices of similar battle portions fitting into the spaces on the other side of the tubes.

A water tube boiler having its tubes arranged in a. flue to form in sectional plan vim approximately the letter W, movable bafiles to-fit'into the two series of spaces formed by the said arrangement of tubes and projecting alternately from opposite sides of the line into said spaces, the balile portions in one series of spaces alternating with and extending at their apices beyond the apices of the bafiie portions in the other series of spaces, and means operable. from a point outside the flue to move said bullies.

l. A water tube boiler comprising a combined steam and water reservoir, steam gen crating tubes suspended in a line in a Zigzag row from and opening into said reservoir, bullies which project alternately from opposite sides of the line into the two series oi oppositely disposed and alternating V- shaped spaces formed by the zig-zag ar- .rangcmcnt of the tubes, and a water collecting chamber suspended from said tubes and communicating therethrough with said reservoir, the apiccs ot the baflies in the spaces of one series extending beyond the apices of and alternating with the bullies in the spaces of the other series.

5. A water tube boiler comprising two sets of straight steam generating tubes suspended in a flue in zig-z ag rows, a vertical partition dis osed between said sets of tubes and dividing said flue, means affordin communication between the upper ends 0 said tubes,

,a water collectingchamber suspended from each set of tubes, and horizontal battles projecting alternately from opposite sides of the Hub into the two series of oppositely disposed and aiternating V-shaped' s c'es formed by the zig-zag arrangement 0 the tubes, the extremities of a ba'llle entering the spaces as one series extending beyond and alternating with the extremities of the bathe entering the spaces of the other series.

6. The combination, in a water tube boiler. of a header, a water collecting chamber, a series of straight tubes extending in groups disposed in z ig-zag lines between said header and water ci'illecting chamber with rcentrant angular spaces between said groups, and bathe plates fitting said spaces, the portions of the plates within the spaces extending from one side of the groups of tubes substantially to the'other side thereof.

7. The combir ation, in a water tube boiler, of a header, a water collecting chamber, a series of straight tubes arranged approximatel'y in. the shape of the letter W and exl tending between said header and the water collecting chamber, and baffles plates fitting the V-shapcd s aces formed by the arrangement of said tu es, the portions of the plates within the spaces extending substantially from one to the other side of the series of tubes.

8. The combination of a boiler setting having a flue, a water tube boiler comprising a header, a water collecting chamber, and a plurality of straight steam generating tubes l arranged in a zig-zag row and disposed in said flue, and bafile plates projecting alternately from opposite sides of said flue and having a line, a boiler comprising a com-' bined steam and water reservoir, steam generating tubes suspended in said line in a ,zig-Zag row from and opening into said reservoir, and a water collecting chamber suspended from said tubes and communilcating thcrotlirough with said steam and water reservoir, and batllc plates projecting alternately from opposite sides of said flue 1 and having toothed edges the teeth of which extend into the two series of spaces formed lby the zigzag arrangement of the tubes, the teeth of one plate being located opposite the spaces between the teeth of the next plate.

10. The combination, in a boiler setting, of a vertical partition therein forming a pair of flues, steam generating tubes disposed in said lines and arranged in zig-Zag rows to form two series of alternating V- shaped spaces between the same, steam col lecting means affording communication bel tween the upper ends of said tubes, a water collecting chamber suspended from each seti of tubes, and horizontal ballle plates project- 9. The combination of a boiler setting l ing from opposite sides of the lines into the spaces formed between the tubes, each battle plate extending from one side of a flue nearly to the opposite side thereof.

11. A Water tube boiler having a header, a water collecting chamber, and vertical tubes arranged bet een said header and chamber in a zig-zag row with reentrant V- shaped spaces at one side of said row interposed between similarly shaped but reversely positioned reiint'rant spaces at the other side, the depth of eaeh space being nearly equal to the distance between the opposite sides of the row of tubes.

12. A Water tube boiler having its tubes arranged in a sinuous group presenting at each side a series of like reentrant angular spaces, the Spaces of one series alternatin with and being positioned reversely to the s1 aces of the other series, and bafi'le plates projecting alternately from opposite sides of the group of tubes and having their edgeseoiiforniing to the eontonrof the group of tubes, to enter the reEntrant spaces thereof, the convex portions of one plate being located opposite the concave portions of the next plate.

In testimony whereof'I have signed my name to this specification in the presence of two subscribing Witnesses.

PAUL KESTNER.

Witnesses HENRI (flnmnnn, Iii-ion PnouEL. 

